hello and thanks for reading.
i have just recieved a 2000 suzuki quad master 500 it has 1200 miles on it and it needs help. first off the reason i got it for cheap is that the starter reduction gears broke the block where they mount so it has to be pull started. after getting it home i made sure all the metal peaces were removed from inside the stator cover. then i put it all together and started it up. it will idle but if i rev it up it will stumble and back fire real bad. i have cleaned the spark plug and the carb and the air filter. it looks like the cdi box has been replaced i can see butt conectors and bare wire( somebody did a bad job). could this be a timming issue? how do i check time?. any help would be great and no i dont have any manual.

 

wow 57 veiws and no help for a new guy. anyway i found the answer from a local atv guy. it was a low battery. runs great now